CN112593977A - Roadway support device - Google Patents
Roadway support device Download PDFInfo
- Publication number
- CN112593977A CN112593977A CN202011289417.6A CN202011289417A CN112593977A CN 112593977 A CN112593977 A CN 112593977A CN 202011289417 A CN202011289417 A CN 202011289417A CN 112593977 A CN112593977 A CN 112593977A
- Authority
- CN
- China
- Prior art keywords
- roadway
- support
- supporting piece
- steel
- composite material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008093 supporting effect Effects 0.000 claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 13
- 239000003733 fiber-reinforced composite Substances 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Abstract
The application provides a roadway support device, include: the first supporting piece is in direct contact with the roadway, and the outer surface of the first supporting piece is covered with a composite material; the second supporting piece is made of section steel and is arranged in the cavity of the first supporting piece; and the third supporting piece is a concrete support formed by curing concrete filled in a cavity of the blank between the inner surface of the first supporting piece and the section steel. The application provides a roadway support device has avoided the emergence of bucking failure mode, has promoted steel utilization efficiency greatly, guarantees the stable performance of roadway support device bearing capacity. And the bearing capacity of the device can be continuously improved along with the increase of deformation, and the deformation of the roadway under the long-term use is remarkably relieved. The shaped steel is located first support piece center, avoids large-scale steel to expose. Meanwhile, the externally wound composite material has good corrosion resistance, protects the internal concrete and the embedded profile steel, and greatly improves the durability of the roadway supporting device.
Description
Technical Field
The application relates to the technical field of coal mining, in particular to a roadway supporting device.
Background
The roadway support device is an effective roadway support means, and especially plays an important role in roadway support of soft rock and crushed rock areas. With the increase of the depth of a mine and increasing requirements of mine construction, a large-section deep tunnel is a future development direction of mine tunnel construction.
In the related technology, the roadway support device mainly comprises a U-shaped steel roadway support device and an I-shaped steel roadway support device. The mine roadway environment is easy to cause corrosion and abrasion of external steel in the profile steel roadway supporting device, and the mechanical property of the roadway supporting device is degraded. Along with the increase of the cross section of the roadway and the increase of the pressure of the surrounding rock mass, the traditional roadway supporting device is difficult to meet the requirements of roadway supporting.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art. For this reason, an aim at of this application provides a roadway support device, has high compressive strength, and the durability promotes by a wide margin, can protect inside concrete and shaped steel, avoids it to receive corruption, wearing and tearing in the tunnel. The density is low, different lengths can be customized, and the production and installation cost can be saved while the construction is simplified.
In order to achieve the above object, an embodiment of the first aspect of the present application provides a roadway support device, including:
the first supporting piece is in direct contact with the roadway, and the outer surface of the first supporting piece is covered with a composite material;
the second supporting piece is made of section steel and is embedded in the cavity of the first supporting piece;
and the third supporting piece is a concrete support formed by curing concrete filled in a cavity of the blank between the inner surface of the first supporting piece and the section steel.
The roadway support device in the embodiment of the application adopts the composite material wound on the external support piece, and effectively restrains the embedded steel support piece through the internal filling concrete, thereby avoiding the occurrence of a buckling failure mode, greatly improving the utilization efficiency of steel, and ensuring the stable exertion of the bearing capacity of the roadway support device. Further, the composite material wound outside the first supporting piece forms annular restraint for internally filled concrete, so that the bearing capacity of the device can be continuously improved along with the increase of deformation, and the problem of deformation of the roadway under long-term use is solved. Furthermore, the section steel supporting piece is embedded in the first supporting piece, so that large-scale steel can be prevented from being exposed. Meanwhile, the externally wound composite material has good corrosion resistance, protects the concrete support piece and the section steel support piece, and greatly improves the durability of the roadway support device.
According to the roadway support device of one embodiment of the present application, the composite material includes: a fiber-reinforced composite material.
According to the roadway support device of an embodiment of the application, the fiber reinforced composite material comprises: a glass fiber composite.
According to the roadway support apparatus of one embodiment of the present application, the composite material is wound around the outer surface of the first support member.
According to the roadway support apparatus of one embodiment of the present application, the third support member is arranged continuously or in sections within the cavity of the first support member.
According to the roadway support device provided by one embodiment of the application, the third supporting piece is cast by factory prefabrication or the outer surface of the first supporting piece is reserved with a grouting hole, and concrete is poured in situ through the grouting hole.
According to the roadway support device of one embodiment of the application, the section steel is located at the center of the section of the first support member.
According to the roadway support device, the section steel is continuously arranged in the cavity of the first support piece.
According to the roadway support device, the section of the section steel is I-shaped or U-shaped.
Drawings
Fig. 1 is a schematic cross-sectional view of a roadway support apparatus according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a first support according to one embodiment of the present application;
fig. 3 is a schematic cross-sectional view of a roadway support apparatus according to another embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The embodiment of the first aspect of the application provides a roadway support device.
Fig. 1 is a schematic cross-sectional view of a roadway support device according to an embodiment of the present application. As shown in fig. 1, the roadway support device 10 includes: a first support 1, a second support 2 and a third support 3.
The support device comprises a first support member 1, wherein the first support member 1 is in direct contact with a roadway, and the outer surface of the first support member 1 is covered with a composite material;
the second supporting piece 2 is made of section steel, and the second supporting piece is embedded in the cavity of the first supporting piece;
and the third supporting piece 3 is a concrete support formed by curing concrete filled in a cavity of a blank between the inner surface of the first supporting piece and the section steel.
Further, the second supporting member 2 is a steel supporting member, and the roadway is supported in an enhanced manner through the steel supporting member. The second support 2 is embedded in the cavity of the first support 1. The second supporting piece 2 is embedded in the first supporting piece 1, large-scale steel can be prevented from being exposed, and the service life of the steel is prolonged.
Further, the third supporting member 3 is a concrete support formed by curing concrete filled in a cavity of a gap between the inner surface of the first supporting member 1 and the second supporting member 2. In this application, pack the concrete and carry out effective restraint to embedded second support piece 2 under the pressurized effect, avoided the emergence of bucking failure mode, promoted steel utilization efficiency and support load greatly.
The first supporting piece 1 without the composite material winding on the outside is difficult to continuously improve the bearing capacity of the device along with the increase of deformation under the states of high stress and large strain due to the three-dimensional stress behavior of steel, so that the roadway supporting device is difficult to provide stable bearing capacity under the deformation action of gradual increase of a roadway. And in this application at first support piece 1's outside winding combined material, can form the hoop restraint to the concrete of inside packing, consequently, the device bearing capacity can be along with the increase of deformation continuously promotes to alleviate the problem that the tunnel takes place to warp under the long-term use.
The roadway support device in the embodiment of the application adopts the composite material wound on the external support piece, and effectively restrains the embedded steel support piece through the internal filling concrete, thereby avoiding the occurrence of a buckling failure mode, greatly improving the utilization efficiency of steel, and ensuring the stable exertion of the bearing capacity of the roadway support device. Further, the composite material wound on the outer portion of the first support member forms annular restraint for internally filled concrete, so that the provided bearing capacity can be continuously increased along with the increase of deformation, and the problem that the roadway deforms in the long-term use process is solved. Furthermore, the section steel supporting piece is embedded in the first supporting piece, so that large-scale steel can be prevented from being exposed. Meanwhile, the externally wound composite material has good corrosion resistance, protects the concrete support piece and the section steel support piece, and greatly improves the durability of the roadway support device.
The fiber reinforced composite material has the characteristics of high specific strength, large specific modulus, designability of material performance, good corrosion resistance and durability, close thermal expansion coefficient to that of concrete and the like, so that the requirements of modern structures on large span, high rise, heavy load, light weight, high strength and work development under severe conditions can be met. The fiber reinforced composite material can be selected by combining the supporting requirements of the roadway so as to improve the safety and durability of the support.
Alternatively, the fiber-reinforced composite material may include glass fibers, carbon fibers, aramid fibers, or the like. The glass fiber has higher temperature resistance, non-combustion, corrosion resistance, good heat insulation and sound insulation, high tensile strength, good electrical insulation and low price compared with the organic fiber. Composites such as fiberglass may be selected for use in the present application.
Optionally, the fiber direction in the composite is circumferential or near circumferential. When the composite material is wound on the first support member 1, the composite material can be wound in a plane or a spiral manner. Adopt approximate annular winding mode to wind combined material on first support piece 1 in this application, can make full use of the big advantage of fibre owner direction mechanical strength.
Optionally, the third supporting member 3 is filled between the outer first supporting member 1 and the second supporting member 2, and common concrete, gangue concrete or grouting material may be selected.
Optionally, the third support 3 is arranged continuously or in segments within the cavity of the first support 1. And the third supporting part 3 is prefabricated and poured by a factory or a grouting hole is reserved on the outer surface of the first supporting part, and concrete is poured in situ through the grouting hole.
Fig. 3 is a schematic cross-sectional view of a roadway support device according to another embodiment of the present application. As shown in fig. 3, the cross-sectional shape of the first support 1 is circular, and the cross-sectional shape of the second support 2 is U-shaped.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (9)
1. A roadway support apparatus, comprising:
the first support piece is in direct contact with the roadway, and the outer surface of the first support piece is covered with a composite material;
the second supporting piece is made of section steel and embedded in the cavity of the first supporting piece;
and the third supporting piece is a concrete support formed by curing concrete filled in a cavity of the blank between the inner surface of the first supporting piece and the section steel.
2. The roadway support apparatus of claim 1, wherein the composite material comprises: a fiber-reinforced composite material.
3. The roadway support apparatus of claim 2, wherein the fiber-reinforced composite material comprises: a glass fiber composite.
4. The roadway support apparatus of any one of claims 1 to 3, wherein the composite material is wrapped around an outer surface of the first support member.
5. The roadway support apparatus of any one of claims 1 to 3, wherein the third support member is arranged continuously or in sections within the cavity of the first support member.
6. The roadway support apparatus of claim 5, wherein the third support member is cast by factory prefabrication or a grouting hole is reserved on the outer surface of the first support member, and the concrete is poured in situ through the grouting hole.
7. The roadway support apparatus of any one of claims 1 to 3, wherein the section steel is located at the cross-sectional center of the first support member.
8. The roadway support apparatus of any one of claims 1 to 3, wherein the steel sections are arranged in series within the cavity of the first support member.
9. The roadway support apparatus of any one of claims 1 to 3, wherein the section steel has an I-shaped or U-shaped cross-sectional shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289417.6A CN112593977A (en) | 2020-11-17 | 2020-11-17 | Roadway support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289417.6A CN112593977A (en) | 2020-11-17 | 2020-11-17 | Roadway support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112593977A true CN112593977A (en) | 2021-04-02 |
Family
ID=75183226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011289417.6A Pending CN112593977A (en) | 2020-11-17 | 2020-11-17 | Roadway support device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112593977A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742305A (en) * | 1993-08-03 | 1995-02-10 | Maeda Corp | Centrifugally formed steel pipe concrete pillar and manufacture thereof |
| US6123485A (en) * | 1998-02-03 | 2000-09-26 | University Of Central Florida | Pre-stressed FRP-concrete composite structural members |
| US20120066994A1 (en) * | 2010-09-22 | 2012-03-22 | Composite Rebar Technologies, Inc. | Hollow, composite-material rebar structure, associated components, and fabrication apparatus and methodology |
| CN102767249A (en) * | 2012-07-06 | 2012-11-07 | 河海大学 | Fiber-reinforced concrete externally-restricted buckling-restrained supporting component and manufacturing method thereof |
| CN102936941A (en) * | 2012-10-24 | 2013-02-20 | 南京林业大学 | Composite pipe concrete composite structure |
| CN104499640A (en) * | 2014-12-30 | 2015-04-08 | 中国矿业大学 | High-durability concrete structural element and manufacture method thereof |
| CN105822330A (en) * | 2016-06-01 | 2016-08-03 | 山东深博巷道支护技术有限公司 | GFRP tube concrete support for underground engineering supporting and construction technology thereof |
| CN107956491A (en) * | 2017-10-11 | 2018-04-24 | 中国矿业大学(北京) | One kind is based on the soft rock roadway support method of " steel grating-concrete filled steel tube " |
-
2020
- 2020-11-17 CN CN202011289417.6A patent/CN112593977A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742305A (en) * | 1993-08-03 | 1995-02-10 | Maeda Corp | Centrifugally formed steel pipe concrete pillar and manufacture thereof |
| US6123485A (en) * | 1998-02-03 | 2000-09-26 | University Of Central Florida | Pre-stressed FRP-concrete composite structural members |
| US20120066994A1 (en) * | 2010-09-22 | 2012-03-22 | Composite Rebar Technologies, Inc. | Hollow, composite-material rebar structure, associated components, and fabrication apparatus and methodology |
| CN102767249A (en) * | 2012-07-06 | 2012-11-07 | 河海大学 | Fiber-reinforced concrete externally-restricted buckling-restrained supporting component and manufacturing method thereof |
| CN102936941A (en) * | 2012-10-24 | 2013-02-20 | 南京林业大学 | Composite pipe concrete composite structure |
| CN104499640A (en) * | 2014-12-30 | 2015-04-08 | 中国矿业大学 | High-durability concrete structural element and manufacture method thereof |
| CN105822330A (en) * | 2016-06-01 | 2016-08-03 | 山东深博巷道支护技术有限公司 | GFRP tube concrete support for underground engineering supporting and construction technology thereof |
| CN107956491A (en) * | 2017-10-11 | 2018-04-24 | 中国矿业大学(北京) | One kind is based on the soft rock roadway support method of " steel grating-concrete filled steel tube " |
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Application publication date: 20210402 |